Experience Points address starts at: 74030C (if your experience points range from 0-255), then expands to 74030D (experience points range from 255 - 65535) and maybe 74030E and 74030F if experience points go beyond that, I don't know.. but I personally don't like to change the experience points because if you go up past a level up point, you won't get the level up stats, unless you make your experience points go to one point below the next levelling up level

You can put in items over 116, but they generally appear as gibberish. In addition, many of these unknown items will crash the game. Secondly, while you can use the Dragonflute, entering towns and dungeons out of sequence may also crash the game. Lastly, players may notice that weapons and armor that are generated this way can cause the attack power or the defense to either be ridiculously high or absurdly low. This issue can be mitigated by entering a random battle.

turns out there is a limit of how many codes you can have in a cheat file for magic engine _________________My Turbo GrafX-16/ PC-Engine Code Database Click HERE
My Turbo GrafX-CD/ PC-Engine CD Code Database Click HERE

I haven't seen this thread before. I will definitely try it on my end to see if it will work. Thank you for sharing it with us, I hope that it will work. This kinda reminds me of my dog who's too smart enough to get some from the pet feeder.